EFP431型电动燃油泵基础设计理论研究
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摘要
电动燃油泵是汽车用电脑控制的燃油控制系统的一个重要部件，市场需求大。本文在对短幅外摆线的基本原理分析的基础上，推导了内转子的齿廓曲线方程，为精确绘制和加工EFP431型电动燃油泵的内转子提供了理论依据。在此基础上，根据啮合原理，对EFP431型电动燃油泵的摆线齿轮泵的受力进行了详细的分析，并导出了摆线齿轮泵的强度计算公式，为优化模型的强度约束条件奠定了理论基础。
本文在对EFP431型电动燃油泵的工作原理和流量脉动分析的基础上，建立了EFP431型电动燃油泵的设计规范，并利用Matlab导出了EFP431型电动燃油泵的流量和脉动的精确的计算公式。然后对EFP431型电动燃油泵的摆线齿轮泵的内外转子进行了优化设计。建立了以“脉动量最小”为目标函数的优化模型，得出了摆线齿轮泵内外转子的优化结构。根据优化结果，利用Pro／E三维建模软件建立了EFP431型电动燃油泵的实体模型。
依据EFP431型电动燃油泵的试验要求，采用了计算流体力学Computational Fluid Dynamics(简称CFD)软件来检测试验所需要的技术数据和结果的方法。通过分析EFP431型电动燃油泵的结构，将EFP431型电动燃油泵分成了一级涡轮泵、二级齿轮泵、直流电机和出口三部分，分别建立了这三部分的内部流场模型，将建立的模型导入FLUENT的前处理软件gimbit中进行网格划分，设置边界类型和流体区域，然后导入FLUENT软件中进行分析，获得了试验所需要的技术数据和结果。
本文建立了EFP431型电动燃油泵的基础设计理论知识，并对泵的流场采用了一种全新的CFD分析方法，为EFP431型电动燃油泵的设计和更深层次的研究提供了一定的理论基础。
Electric fuel pump is the important unit in fuel control system which is controlled by computer, which is in the hare demand. On the basis of the analysis of the basic principle of short amplitude epicycloids, the paper has inferred the tooth profile curve equation of inner rotor, which provides the theory basis for drawing and manufacturing precisely inner rotor of electric fuel pump for EFP431 type. On the basis of above, the pressure of cycloid gear pump for electric fuel pump for EFP431 type has been discussed in detail according to mesh principle and the strength computation formula has been inferred, which lay the theory basic for strength constraint of optimum model.
On the basis of analysis of the principle of work and flux fluctuation of electric fuel pump of EFP431 type, the paper has built design specification of electric fuel pump for EFP431 type. Moreover, precise computation formula for the flux and fluctuation of electric fuel pump for EFP431 type has been inferred. On the basis of above, the inner and outer rotor of cycloid gear pump for electric fuel pump for EFP431 type has carried on optimum design. The paper has built the optimum model as objective function of the smallest fluctuation and obtained the optimum structure of inner and outer rotor of cycloid gear pump. According to optimum results, the paper has built the solid model of electric fuel pump for EFP431 type by Pro/E soft.
According to experiment demand of electric fuel pump of EFP431 type, the paper has adopted CFD soft to obtain the technical data and result. According to assay the structure of electric fuel pump of EFP431 type, the electric fuel pump for EFP431 type has been divided into three parts as the turbine pump, the gear pump, the direct current motor and outer. The paper has built separately these three parts of internal flow field model, which was inputted gambit soft to mark off the grid, set the boundary condition and flow field. Then, the file of gambit has been carried on analysis by fluent soft and obtained the technical data and result. The every data can be obtained quickly though anlysis and computation in CFD software on the
本文在对EFP431型电动燃油泵的工作原理和流量脉动分析的基础上，建立了EFP431型电动燃油泵的设计规范，并利用Matlab导出了EFP431型电动燃油泵的流量和脉动的精确的计算公式。然后对EFP431型电动燃油泵的摆线齿轮泵的内外转子进行了优化设计。建立了以“脉动量最小”为目标函数的优化模型，得出了摆线齿轮泵内外转子的优化结构。根据优化结果，利用Pro／E三维建模软件建立了EFP431型电动燃油泵的实体模型。
依据EFP431型电动燃油泵的试验要求，采用了计算流体力学Computational Fluid Dynamics(简称CFD)软件来检测试验所需要的技术数据和结果的方法。通过分析EFP431型电动燃油泵的结构，将EFP431型电动燃油泵分成了一级涡轮泵、二级齿轮泵、直流电机和出口三部分，分别建立了这三部分的内部流场模型，将建立的模型导入FLUENT的前处理软件gimbit中进行网格划分，设置边界类型和流体区域，然后导入FLUENT软件中进行分析，获得了试验所需要的技术数据和结果。
本文建立了EFP431型电动燃油泵的基础设计理论知识，并对泵的流场采用了一种全新的CFD分析方法，为EFP431型电动燃油泵的设计和更深层次的研究提供了一定的理论基础。
Electric fuel pump is the important unit in fuel control system which is controlled by computer, which is in the hare demand. On the basis of the analysis of the basic principle of short amplitude epicycloids, the paper has inferred the tooth profile curve equation of inner rotor, which provides the theory basis for drawing and manufacturing precisely inner rotor of electric fuel pump for EFP431 type. On the basis of above, the pressure of cycloid gear pump for electric fuel pump for EFP431 type has been discussed in detail according to mesh principle and the strength computation formula has been inferred, which lay the theory basic for strength constraint of optimum model.
On the basis of analysis of the principle of work and flux fluctuation of electric fuel pump of EFP431 type, the paper has built design specification of electric fuel pump for EFP431 type. Moreover, precise computation formula for the flux and fluctuation of electric fuel pump for EFP431 type has been inferred. On the basis of above, the inner and outer rotor of cycloid gear pump for electric fuel pump for EFP431 type has carried on optimum design. The paper has built the optimum model as objective function of the smallest fluctuation and obtained the optimum structure of inner and outer rotor of cycloid gear pump. According to optimum results, the paper has built the solid model of electric fuel pump for EFP431 type by Pro/E soft.
According to experiment demand of electric fuel pump of EFP431 type, the paper has adopted CFD soft to obtain the technical data and result. According to assay the structure of electric fuel pump of EFP431 type, the electric fuel pump for EFP431 type has been divided into three parts as the turbine pump, the gear pump, the direct current motor and outer. The paper has built separately these three parts of internal flow field model, which was inputted gambit soft to mark off the grid, set the boundary condition and flow field. Then, the file of gambit has been carried on analysis by fluent soft and obtained the technical data and result. The every data can be obtained quickly though anlysis and computation in CFD software on the
引文
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[2] 肖生发，赵树朋．汽车构造．北京大学出版社，2006
[3] 陈家瑞．汽车构造．人民交通出版社，1993
[4] 吴社强，吴政清，姜斯平．汽车构造．上海科学技术出版社，2002
[5] 王锐新，张金柱．电子燃油喷射系统．化学工业出版社，2004
[6] 鲁民巧．汽车构造．机械工业出版社，2003
[7] Harten A.High resolution scheme for hyperbolic system of conservation law[J]. J Comp Phys, 1983,(49): 357～393.
[8] Sweby P.K.High resolution schemes using fluxlimiters for hyperbolic conservation laws[J]. SIAM J Num Aual, 1984,21: 995～1011.
[9] Yee H C.Construction of explicit and implicitsymmetric TVD scheme and their applications[J]. J Comp Phys, 1987, (68): 151～179.
[10] Steger J L, Warming R F. Flux vector splitting of the inviscid gasdynamic equations with application to finite difference methods[J]. J Comp Phys, 1981,(40): 263～293.
[11] Chakravarthy S R. The split-coefficient matrix methodfor hyperbolic system of gas dynamics equations[A]. AIAA Paper[C], 80-268, 1980.
[12] Roe P L.Approximate Riemann solvers, parameter vectors and different schemes[J]. J Comp Phys, 1981,(43): 357～372.
[13] Van Leer B.Towards the ultimate conservative diffe-rence scheme V: A second order sequal toGodunov's method[J]. J Comp Phys, 1979, 02):101～136.
[14] Jameson A, Schmidt W, Turkel E. Numerical solution of the Euler equation by finite volume methods with Runge-Kutta time stepping schemes[A]. AIAA Paper[C], 81-1259, 1981.
[15] Ni R H.A Multiple grid scheme for solving the Euler equation[J]. J AIAA, 1982, 20: 1565～1571.
[16] Van Leer B, Tai C H, Power K G.Design of optimally smoothing multistage schemes for the Euler equations[A]. AIAA Paper[C], 89-1933, 1989.
[17] [美]R．P．兰姆贝克．液压泵和液压马达选择与应用．机械工业出版社，1989
[18] 朱锡成，周兴业，赵恒枫．齿轮螺杆式液压泵及马达．机械工业出版社，1988
[19] 郑州工学院机械原理及机械零件教研室编．摆线针轮行星传动．科学出版社，1978
[20] 宋俊，王淑莲等．液压元件优化．机械工业出版社，1999
[21] 闵德云．齿轮泵的优化．机械设计与制造，1990，4：5-9
[22] 张利平．液压齿轮泵的双目标模糊优化设计．现代机械，1993，1：22～24
[23] 张建寿等．低噪声内齿轮泵设计参数最优化技术．上海交通大学学报，1990，24(3)：70～76
[24] 苏金明，王永利．Matlab实用指南．电子工业出版社，2006
[25] 尹泽明，丁春利．精通Maflab6.0，清华大学出版社，2003
[26] David F.Rogers, J.Alan Adams. Mathematical Elements for Computer Graphics(2ndEdition). Mc-Graw-Hill, 1990
[27] Donald Hearn, M.Pauline Baker.Computer Graphics.Prentice Hall, 1997
[28] 毛华永等．摆线转子式齿轮泵的设计．粉末冶金技术，2003，10(5)
[29] 菅野晃二形内接齿车特性计算 日本机械学会论文集 (第3部)1969 1381～1388
[30] 毛永华等．摆线转子式油泵齿廓的形成与参数方程的建立．山东大学学报(工学版)，2002，4(2)
[31] 屈盛官，孙自树．提高转子泵容积效率的措施．华中科技大学学报，2001，1(1)
[32] 张妙龄，潘政广．新型内啮合摆线齿轮泵的研制．流体机械，1997，10
[33] 吴序堂．齿轮啮合原理．机械工业出版社，1982
[34] 姚文席，周有强．长幅摆线齿廓的一种圆弧替代方法．机械设计与研究，1991(1)
[35] 刘杰，蒋章．ND_5型机车起动机油泵和燃油输送泵的齿形研究及运动学分析．内燃机车，1995，7
[36] 马生荣，刘振华．油泵内转子的外形曲线与计算机辅助设计．粉末冶金技术，2003，10(5)
[37] 陈忠强，杨丹青，李庆．直齿内啮合齿轮泵的特性分析．液压气动与密封，1996(3)
[38] 崔建昆，秦山，闻斌等．OX型直线共轭内啮合齿轮泵研制．流体机械，2004(12)
[39] Paul T, Bellach S. GEAR PUMP[P]. United States Patent Office. Patented Jan, 27,1970
[40] 姚培棣．内啮合齿轮泵和NB泵．液压与气动，1992，(2)
[41] 叶仲和等．外圆弧及其包络线齿形的楔块式内啮合齿轮泵的齿廓方程及性能分析．液压与气动，2004，3
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